氷雪中で起きる局部放電の紫外線画像による電流の大きさの推定

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2017/04/01

タイトル(英語): Estimation of Current Magnitude of AC Partial Discharge Occurring at Ice and Snow Gap by Ultra Violet Image

著者名: 日下　健太（山形大学大学院理工学研究科），遠藤　拓哉（山形大学大学院理工学研究科），東山　禎夫（山形大学大学院理工学研究科），石山　史之（東北電力（株）研究開発センター）

著者名(英語): Kenta Kusaka (Graduate School of Science and Engineering, Yamagata University), Takuya Endo (Graduate School of Science and Engineering, Yamagata University), Yoshio Higashiyama (Graduate School of Science and Engineering, Yamagata University), Fumiyuki Ishiyama (Research & Development Center, Tohoku Electric Power Co., Inc.)

キーワード: 局部アーク放電，放電電流，氷電極，雪ギャップ，紫外線画像　　partial arc discharge，discharge current，ice electrodes，snow gap，UV image

要約(英語): In a transmission line passing through a snow region, snow inevitably accretes on insulators more or less and partial discharge might occur on insulator strings covered with snow. Since partial discharge occurring at the surface of polymeric insulator may deteriorate the insulating property of it, it is necessary to find the magnitude of discharge current as well as the location or occurrence frequency of partial discharge to grasp the degree of degradation. The paper shows the method for estimating the magnitude of the discharge current from the images taken by an ultra violet camera. To simulate partial discharge occurring at an air gap in capped snow over an insulator, ac partial discharge was formed between a pair of ice electrodes or snow walls. By increasing applied voltage to the ice or snow electrodes, discharge current was increased. The luminous area in UV image was increased with the magnitude of discharge current below 10mA. The magnitude of discharge current flowing through an air gap formed in accreted snow can be estimated from the luminous area in UV image.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.137 No.4 （2017）

本誌掲載ページ: 313-318 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/137/4/137_313/_article/-char/ja/